General Dynamics DIGITAL TRACKING RECEIVER - Controlling DTR with 72 XX Acus Via Serial Port; Dtr to 7200 Acu Serial Connections Matrix; TABLE 3-12 A RS-232 CONNECTIONS to 7200 ACU; TABLE 3-12 B RS-422 CONNECTIONS to 7200 ACU

Installation
CG-1220 DT
R
3-13
6. On the front panel, press SHIFT-REMOTE to enter REMOTE mode.
7. Test by selecting BEACON 1-4 at the 7134 ACU.
3.5.3 Controlling DTR with 72XX ACUs via Serial port
The information below briefly describes the connections for controlling a DTR from a
GDST 7200-series ACU.
1. Using the connections matrix in Table 3-11 below, decide on a valid RS-232 or
RS-422 communications standard connection between the DTR and 7200. An
invalid connection is marked by an “X” and cannot be used. Note that DTR Port 2
can be used as either a RS-232 or RS-422 port, and that DTR Port 3 is RS-485
only and cannot be used with a 7200 ACU.
TABLE 3-11 DTR TO 7200 ACU SERIAL CONNECTIONS MATRIX
7200 ACU
PORT J14(1) J15(2) J16(3) J17(4) J18(5) J19(6) J20(7)
1
RS232 RS232 X X X X X
2
RS232 RS232 RS422 RS422 RS422 RS422 RS422
DTR
3
X X X X X X X
2. Using Table 3-12 a, b, or c below, make the correct physical connections per the
connector and port standard decision made in step 1.
TABLE 3-12a RS-232 CONNECTIONS TO 7200 ACU
DTR PORT 1 OR 2 (DE-9) ACU PORT J14 OR J15 (DB-25)
2 – RX 2 – TX
3 – TX 3 – RX
5 – GND 7 – GND
TABLE 3-12b RS-422 CONNECTIONS TO 7200 ACU
DTR PORT 2 (DE-9) ACU PORT J16 OR J17 (DB-25)
1 – TX+ 22 – RX+
4 – RX+ 19 – TX+
5 – GND 1 – GND
6 – TX- 9 – RX-
9 – RX- 6 – TX-
TABLE 3-12c RS-422 CONNECTIONS TO 7200 ACU
DTR PORT 2 (DE-9) ACU PORT J18-J20 (DE-9)
1 – TX+ 4 – RX+
4 – RX+ 1 – TX+
5 – GND 5 – GND
6 – TX- 9 – RX-
9 – RX- 6 – TX-